Seiko Cal. 4420 - 758

The 4420-758 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4420 caliber with 30j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-710540cfdbdb]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

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